LeetCode: Reverse Integer

文章目录

Reverse digits of an integer.

Example1: x = 123, return 321

Example2: x = -123, return -321

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递归处理，代码可以写的很优雅

public int reverse(int x) {
    boolean neg = x < 0;
    if (neg) x = -x;
    int result = 0;
    while (x != 0) {
        result = result * 10 + x % 10;
        x /= 10;
    }
    return (neg ? -1 : 1) * result;
}